Rect & Batt Charge Part 2 Flashcards
The average voltage output of the single-phase, half-wave rectifier is calculated with what formula?
Vdc = Vpeak x 0.318
The ripple frequency output of a single phase, half-wave rectifier is the same frequency as the supply. T or F?
True
A centre-tapped transformer with two diodes means that the load sees a voltage during both alternations. This is called what form of rectification?
Full-wave rectification
What is the average factor for a centre-tapped , full wave rectifier?
0.637
Single-phase, full-wave bridge is the most used single-phase rectifier. T or F?
True
The ripple frequency output in a single-phase, full-wave rectifier is the same as the input frequency. T or F?
False. Fout = Fin x 2
How do you calculate “ I LOAD “ ?
I load = Vdc AVG / R
What is a rectifier?
A device that changes A.C into D.C
Bridge Rectifiers contain how many diodes?
Four diodes
What is the AVG factor for a Three-Phase, half-wave rectifier?
0.827
When one diode is conducting in a three-phase, half-wave rectifier, what are the other two diodes doing?
Block the line to line voltage
Three Phase, Full-wave rectifiers have 4 to 6 diodes. T or F?
False. They have six diodes only
The output frequency of a three-phase, full-wave is calculated how?
Fin x 6
The average diode current in a three-phase, full-wave diode is half of the load. T or F?
False. The diode current is one-third of the average load current.
Are battery chargers rated in voltage capacity or current capacity?
Current capacity
The three main sections of a battery charger are
Transformer
Rectifier
Heat Sink
Name two other components that could be found in battery chargers besides a Transformer, Rectifier and Heat Sink:
Any of these five other components are suffice:
Overcurrent circuit breaker
Ammeter
Correct polarity indicator
Charge time clock
Power on indicator lamp
What happens to the volts per turn on the transformer primary when the selector is changed from 12V low to 12V high?
It increases
The load sees the large voltage and the diode blocks the low voltage. T or F?
False. The load sees the small voltage and diode blocks the high voltage
What is the AVG factor for a three phase, full wave rectifier?
0.955
What is the formula to find Diode Current in a Three-Phase, Full-Wave Rectifier?
I LOAD / 3
What is the conduction angle for a single-phase, full-wave centre tap?
180 degrees
Name the 4 Different Diode Types:
Axial Diode - UP TO 5A
Stud Mount - UP TO 600A
Power Module - UP TO 600A
Hockey Puk - UP TO 7000A
Electronic devices made from semiconductor material are known as what sort of devices?
Solid state devices
Is a neutral required for a three-phase, full wave rectifier?
No
What is the conduction angle for a three-phase, half-wave rectifier?
120
Directional or blocking diodes may also be called what sort of diodes?
Steering diodes or isolating diodes
How do you calculate Vrrm of a full wave center tap rectifier?
Vpeak of the secondary
